The EXT_disjoint_timer_query.getQueryObjectEXT()
method of the WebGL API returns the state of a query object.
The EXT_disjoint_timer_query.getQueryObjectEXT()
method of the WebGL API returns the state of a query object.
js
getQueryObjectEXT(query, pname)
query
A WebGLQuery
object from which to return information.
pname
A GLenum
specifying which information to return. Must be ext.QUERY_RESULT_EXT
or ext.QUERY_RESULT_AVAILABLE_EXT
.
Depends on pname
:
pname
is ext.QUERY_RESULT_EXT
: A GLuint64EXT
containing the query result. pname
is ext.QUERY_RESULT_AVAILABLE_EXT
: A GLboolean
indicating whether or not a query result is available. js
const ext = gl.getExtension("EXT_disjoint_timer_query"); const query = ext.createQueryEXT(); ext.beginQueryEXT(ext.TIME_ELAPSED_EXT, query); // Draw ext.endQueryEXT(ext.TIME_ELAPSED_EXT); // At some point in the future, after returning control to the browser const available = ext.getQueryObjectEXT(query, ext.QUERY_RESULT_AVAILABLE_EXT); const disjoint = gl.getParameter(ext.GPU_DISJOINT_EXT); if (available && !disjoint) { // See how much time the rendering of the object took in nanoseconds. const timeElapsed = ext.getQueryObjectEXT(query, ext.QUERY_RESULT_EXT); }
Specification |
---|
WebGL EXT_disjoint_timer_query Extension Specification |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getQueryObjectEXT |
70Only supported on macOS.47–65Removed due to the GLitch exploit. |
79Only supported on macOS. |
51–59Removed due to the GLitch exploit. |
No |
57Only supported on macOS.34–52Removed due to the GLitch exploit. |
No | 47–65Removed due to the GLitch exploit. |
47–65Removed due to the GLitch exploit. |
No | 34–47Removed due to the GLitch exploit. |
No | 5.0–9.0Removed due to the GLitch exploit. |
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https://developer.mozilla.org/en-US/docs/Web/API/EXT_disjoint_timer_query/getQueryObjectEXT